Investment Securities - Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities
Amortized Cost	$ 560,453	$ 374,415
Allowance for Credit Losses	(241)	(286)
Gross Unrealized Gains	536	1,644
Gross Unrealized Losses	(82,239)	(5,818)
Fair Value	478,509	369,955
U.S. government sponsored agencies
Schedule of Held-to-maturity Securities
Amortized Cost	132,366	36,431
Allowance for Credit Losses	0	0
Gross Unrealized Gains	130	86
Gross Unrealized Losses	(9,476)	(1,004)
Fair Value	123,020	35,513
States and political subdivisions
Schedule of Held-to-maturity Securities
Amortized Cost	145,263	151,688
Allowance for Credit Losses	(241)	(286)
Gross Unrealized Gains	162	1,006
Gross Unrealized Losses	(36,408)	(2,270)
Fair Value	108,776	150,138
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities
Amortized Cost	176,215	110,708
Allowance for Credit Losses	0	0
Gross Unrealized Gains	244	370
Gross Unrealized Losses	(18,461)	(919)
Fair Value	157,998	110,159
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities
Amortized Cost	106,609	75,588
Allowance for Credit Losses	0	0
Gross Unrealized Gains	0	182
Gross Unrealized Losses	(17,894)	(1,625)
Fair Value	$ 88,715	$ 74,145

Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity).

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Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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